Re: apply function

[Heime <heimeborgia@protonmail.com>]

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------- Original Message -------
On Monday, August 7th, 2023 at 6:12 PM, Karan Ahlawat <ahlawatkaran12@gmail.com> wrote:


> On 07/08/23 11:15, Heime wrote:
> 
> > I have seem code that calls a function in the following way
> > 
> > (apply 'nemboss-estring (pp-to-string object) bfname))
> > 
> > than the usual
> > 
> > (emboss-estring (pp-to-string object) bfname)
> > 
> > What might be the reasons for doing so ?
> 
> 
> The most common use case I've seen for this is that apply can take in a
> list as the arguments to the function, where a list would not work, and
> then spread the elements of the list as individual arguments. So
> 
> (+ (list 1 2 3))
> 
> doesn't work, but doing
> 
> (apply #'+ (list 1 2 3)) ; outputs 6
> 
> does work, since it essentially reduces it to (+ 1 2 3)

I want to print the output from a macro by passing its output to a function.
Would use of apply be more appropriate ?

(show-mcode '(thismacro (* 3 5) (* 5 7)))

Or should I use something else ?  Should the expansion of a macro be turned 
to a list before passing it to a function ?